MSM 99
MSM 99
Technical Proceedings of the 1999 International Conference on Modeling and Simulation of Microsystems

Applications: Microfluidics Chapter 16

The Valveless Diffuser Pump-A Numerical Design Study Using MATLAB

Authors: A. Olsson, G. Stemme and E. Stemme

Affilation: Department of Signals, Sensors and Systems, Sweden

Pages: 581 - 584

Keywords: valveless diffuser pump, numerical design study, matlab

A lumped-mass model is used to improve the design of the valveless diffuser pump. The model is implemented using MATLAB and tested for different previously reported pumps. The flow-pressure characteristics are predicted for different excitation levels. It is seen that low chamber pressure limits the possible excitation level. A pump with two serially connected pump chambers working in anti-phase is found advantageous compared with a single chamber pump. Indication is found that down scaling of the diffuser elements from 80ïïïï80 µm throat cross-sectional area to 40ïïïï40 µm throat cross-sectional area increase the attainable pressure head. The possibility to use deposited PZT instead of discs fixed with adhesive is shown promising.

ISBN: 0-9666135-4-6
Pages: 697

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